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Title: Microsporidia infection in Neochetina eichhorniae and N. bruchi populations in Texas
Authors: Aquatic Plant Control Research Program (U.S.)
Lewis, Sonya F.
Grodowitz, Michael Jay
Freedman, Jan E.
Keywords: Aquatic plants--Texas--Management
Weevil agents
Publisher: Environmental Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Technical note
Purpose: This technical note discusses the collection, dissection, and screening of Neochetina bruchi Hustache and N. eichhorniae Warner from sites in Texas for the infectious protozoan disease, microsporidiosis. The causal organisms (Microsporidia) have been shown to severely limit the effectiveness of the weevil agents by reducing egg production and shortening life spans (Center and Rebelo 2001). Surveys conducted in 1995 determined that microsporidia were not present in weevils collected from sites in Texas. During the summer of 2002, researchers from the U.S. Army Corps of Engineers, Engineering Research and Development Center (ERDC) again surveyed sites in Texas in an effort to assay Neochetina populations for the presence/absence of microsporidia. It is essential that infection of N. bruchi and N. eichhorniae be assessed so that impact from microsporidiosis can be evaluated. In addition, it is becoming commonplace to import weevils from sites outside of Texas to augment existing weevil populations. Such importations are risky if imported weevils have levels of infection higher than existing Texas populations.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Note

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